Question 107 of 464
N10-009 Network Operations Practice Question
A network administrator is creating documentation for a new data center. Which type of diagram is BEST for showing the logical relationships between VLANs and their associated subnets?
⚠ Common exam trap
Candidates often confuse 'logical topology' with 'physical topology,' assuming that a physical diagram can show VLANs because VLANs are configured on physical switches, but VLANs are a Layer 2 abstraction that must be documented separately.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Logical topology diagram
A logical topology diagram is the correct choice because it illustrates how devices communicate across the network, including the mapping of VLANs to their associated IP subnets. This type of diagram abstracts away physical cabling and device locations to focus on Layer 2 and Layer 3 relationships, such as VLAN IDs, subnet masks, and default gateways. It is essential for documenting network segmentation and troubleshooting inter-VLAN routing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Physical topology diagram
Why it's wrong here
A physical topology diagram illustrates the actual physical layout of network devices and their interconnections, often showing buildings, floors, and the physical links (e.g., fiber optic, copper) between major hardware components like routers, switches, and servers. While it provides an overview of the network's physical footprint, it does not delve into the logical segmentation, IP addressing, or VLAN configurations that define how traffic is logically organized and routed. It focuses on the 'where' and 'how' of physical connections, not the 'what' of logical groupings.
When this WOULD be correct
When the question asks for the best diagram to show the physical placement of servers, switches, and cabling paths in a data center.
- ✓
Logical topology diagram
Why this is correct
A logical topology diagram is essential for documenting a new data center because it visually represents the abstract relationships between network components, independent of their physical locations. This type of diagram clearly illustrates network segments, virtual LANs (VLANs), IP addressing schemes, and routing protocols, making it perfect for understanding how different subnets and VLANs interact and how data flows logically through the network. It provides a high-level view of the network's functional design, crucial for configuration and troubleshooting.
- ✗
Wiring diagram
Why it's wrong here
A wiring diagram meticulously details the physical cable runs, including cable types, lengths, pathways, and specific termination points at patch panels, wall jacks, and device ports. This diagram is crucial for installation, cable management, and troubleshooting physical connectivity issues, but it does not convey any information about logical network groupings like VLANs, IP subnets, or routing paths. It is a granular physical map of the cabling infrastructure.
When this WOULD be correct
When documenting physical cable runs between patch panels and switches in a data center, a wiring diagram is the best choice.
- ✗
Rack elevation diagram
Why it's wrong here
A rack elevation diagram provides a detailed physical representation of equipment placement within a server rack, showing the front and/or rear views of devices, their specific rack unit (RU) positions, and the location of physical ports and power connections. While vital for physical installation, space planning, and power management, it does not depict any logical network segmentation, IP addressing, or VLAN assignments. It focuses solely on the physical arrangement of hardware components.
When this WOULD be correct
When the question asks for the physical arrangement of servers, switches, and other hardware within racks in a data center, a rack elevation diagram is the best choice.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The N10-009 exam frequently reuses these exact scenarios with slightly different constraints.
✓Logical topology diagramCorrect answer▾
Why this is correct
A logical topology diagram is essential for documenting a new data center because it visually represents the abstract relationships between network components, independent of their physical locations. This type of diagram clearly illustrates network segments, virtual LANs (VLANs), IP addressing schemes, and routing protocols, making it perfect for understanding how different subnets and VLANs interact and how data flows logically through the network. It provides a high-level view of the network's functional design, crucial for configuration and troubleshooting.
✗Physical topology diagramWrong answer — click to see why▾
Why this is wrong here
A physical topology diagram shows the physical layout of devices and cabling, not logical relationships like VLAN-to-subnet mappings.
★ When this WOULD be the correct answer
When the question asks for the best diagram to show the physical placement of servers, switches, and cabling paths in a data center.
Why candidates choose this
Candidates may confuse 'logical' with 'physical' or think VLANs are tied to physical connections, overlooking that VLANs are logical constructs.
✗Wiring diagramWrong answer — click to see why▾
Why this is wrong here
A wiring diagram shows physical cable connections and paths, not logical relationships like VLAN-to-subnet mappings.
★ When this WOULD be the correct answer
When documenting physical cable runs between patch panels and switches in a data center, a wiring diagram is the best choice.
Why candidates choose this
Candidates may confuse 'wiring' with 'logical connections' because VLANs are often associated with switch configurations that involve cabling.
✗Rack elevation diagramWrong answer — click to see why▾
Why this is wrong here
A rack elevation diagram shows the physical placement of equipment in racks, not logical relationships between VLANs and subnets.
★ When this WOULD be the correct answer
When the question asks for the physical arrangement of servers, switches, and other hardware within racks in a data center, a rack elevation diagram is the best choice.
Why candidates choose this
Candidates may associate data center documentation with rack layouts and mistakenly think rack elevation diagrams include logical network information.
Analysis generated from the official N10-009blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Visual reference
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Last reviewed: Jun 11, 2026
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